Hot-water heating system.



A. E. GROWHURST.

. HOT WATER'HEATING SYSTEM.

urmonzon FILED APR. 7, 1908.

91 3,364. Patented Feb. 23, 1909.

INVENTOR. A. E.CROWHUR6T.

Min.

PATENT OFFICE.

ALBERT ERNEST CROWHURST, OF HUMBER BAY, ONTARIO, CANADA.

nor-warns, naa'rme srs'rnu.

Specification of Letters Patent.

Patented Feb. 23, 1909.

Application filed April 7, 1908. Serial No. 425,695.

Tov all whom it may concern:

Be it known that I, ALBERT ERNEST ORow- HURST, of the village of Humber Bay, in the county of York, in the Province of Ontario,

5 Canada, florist, have invented certain new and useful Improvements in Hot-Water Heating Systems, of which the following is the specification.

My invention relates to improvements in hot water heating systems, and the object of the invention is to devise a means whereby the circulation of the water in a gravity system of heating may be accelerated in order that all the pipes, both flow and return, may be kept at the same temperature and thus produce an even heat throughout the building and at the same time reduce the consumption of fuel to aminimum.

A further object is to make the device,so that it will automatically change its position if not in use to suit the ordinary conditions of a gravity system and without effecting the effectual o eration of the same.

- A stillf irther object is to produce in a heating system a device in which there will be no valves or b passes used.

Yet further objects are to make the device capable of beingused in a system independent of gravity and capable of repair by any unskilled person.

My invention consists chiefly of a casing interposed between the end of the return pipe and its entrance to'the heater, a spindle journaled in suitable bearings, means for driving the spindle, and blades mounted thereon and provided with means whereby when the-shaft is stationar they lie on a plane parallel. to the axis of t e shaft and-the course of the circulation, but when the shaft is rotated the l assume a position at an an le to a plane at light angles to the plane of tire axis, so as. to. induce a circulation, the parts and the circulation pipes being otherwise arranged as hereinafter more particularly ex- 45 plain'ed. a

'. F ure 1, is a perspective view of a heater showing the arrangement of, the pipes and l l the location of my improved device for ac celeratingthe circulation of ,the water therethrough. Fig. 2, is a sectional ers ective view ofthe casing. Fig. 3, is a etai of the blades and their connection to the spindle.

Fig. 4, is a longitudinal section through the sipmdle and parts cooperating with the blades. g. 5, is a cross section on line a/b Fig. 4.

.G and G.

In the drawings like letters of reference indicate corresponding arts in each figure.

A is] the heater'and having two branches A extending from the spine and passing back into the return pipe A is a casing having a right angular branch A by which it is connected to the end of the return pipe. 7 The inner end of the casing A is flanged and suitably connected to a flanged pipe near the bottom of the boiler. The outer end of the casing, which is cylindrical is provided with a head B having a stufling box or gland B, which is held in posltion by the rods 0 extendingtherethrough and through the spider D and rovided with nuts D at their inner ends. T e head B has formed or attached to it the bearing B which may be a ball or any other suitable bearing and extending through the bearing B stufiing box B and the head D of the spider D is the spindle E, which is rovided with the driving pulley E from w ich it is driven from any suitable source of power, at one end and a bevel gear D secured .to the reduced opposite end.

F is a sleeve loosely mounted on the,

s indle E and, provided with an end casing B in which is located the gear D and 1n which are journaled the stems G and (l of the blades G. The stem G is provided with a reduced portion G at the lower end thereof and the stem .G with a recess G into which the reduced portion G fits, thereby journaling one stem within the other. The

are the flow pipes stems G and G: are rovided with segmental bevel gears G5 and designed to mesh with the gear D of the spindle E. The gears G5 and G are suitably secured to the stems I is a collar secured on the s indle E at the opposite end of the sleeve F avlng a pm I securing it to the spmdle.

J is a spiral sprmg encircling the sleeve and having one end confined by the pro ecting end of the pin I and the opposlte end confined by a pin I held in the sleeve F.

I is an arc-sha ed recess concentric to the center of the sha E and formed in the inner end of the sleeve F. I- is a rojection extending from the collar I into t e recess I The normal tendency of the spring J is to force the sleeve around, so as to bring the projection I against the ends of the recess I (see Fig. 5) and thus throw the blades parintermeshing with the quadrantal gears G and G rotates the spindles and the blades into an angular position substantially crosswise 'of the shaft, thereby acting to impel the Wat or rapidly into the body of the heater and through the same and thus producing a forced circulation. When the projection I contacts with the other end of the recess I the sleeve is' necessarily forced around,

the spiral spring I being brou ht by this movement into tension and t is tension immediately the spindle E stops rotating carries the sleeve around, so as to cause the gears D and G and G to reset the blades v in the normal position shown in the drawing.

It will thus be seen that if I do not wish a forced circulation all it is necessary to do is to stop the rotation of the spindle E When the gravity circulation is restored to the system. It will also be seen that should the ower give out by which the spindle is rotated or should anything happen to the ower drive of the spindle the sto page of t e spindle will immediately set t 10 blades to the normal position.

What I claim as my invention is:

1. A hot Water heating system comprisin supply and return pipes, a casing interpose intermediate the len th of the same, a spindle extending throng the center of the easing, blades carried by said spindle, automatic means for holding the blades parallel to a plane passing through the axis of the spindle when the spindle is at rest and for carrying the blades to an angle set in relation to the spindle when the spindle is rotated.

2. In a hot water heating system, the combination with en ply and return pipes and the heater, of a cy lmdrical casing having one end thereof extending into the return ipe leading to the heater and having an out et extending at right angles thereto and connected to a continuation of the return fpipe t e and having a head at the opposite end 0 casing carrying a journal and stufling box,

a spindle journaled in the aforesaid journal in a suitable bearing on the inside of the casing, blades connected to the shaft and adapted to lieparallel to the plane of axis of rotation when the shaft is stationary and means operated through the rotation of the shaft for forcing the blades to the desired angle to induce circulation as and for the purl pose s ecified. I

| 3. n a hot water heating system of the i class described, the combination with the i casing and spindle having one end connected l to the return pipe next the boiler and an outi let connected to the continuation of the rei turn pipe, of a spindle suitably journaled in I the casing and suitably driven, a sleeve f loosely mounted on the s indle and provided 1 with an end casing, bla es having the spindles thereof journaled in the casing, gears se cured to the spindles of the blades, a gear secured to the main spindle and meshing with the aforesaid gears for normallyholding the sleeve and blades in inoperative position, as and for the purpose specified.

class described, the combination with the casing and spindle having one end' connected to the return pipe next the boiler and an outlet connected to the continuation of the return pipe, of a spindle suitably journaled in the casing and suitably driven, a sleeve loosely mounted on the spindle and pro recess .at the opposite end, blades having the spindles thereof journaled in the casing gears secured to the spindles of the blades, a

ear secured to the main spindle and meshmg; with the aforesaid gears, a collar secured to the spindle at the o posite end of the sleeve andprovided wit a projection ex tending into the concentric'recess aforesaid,

connected at one end to the collar and at the pose s ecified. s

5'. n a hot water heating system, a rotatable spindle and suitable bearlng therefor :designed to be inserted in the shaft or 1pc,

ed to lie parallel on a plane through the axis of rotation, when the spindle is at rest and means for automatically carrying the blades to an angle set in relation to the shaft when the shaft is rotated.

ALBERT ERNEST CROWHURST. Witnesses:

B. BOYD, R. COBAIN.

vided with an end casing and a concentricblades afiixed in the ends thereof, and a apt- 4. In a, hot water heating system of the a and a spiral spring encircling the sleeve and.

opposite end to the sleeve as and for the pur- 

